HIDRODYNAMICS AND OPERATIONAL PARAMETERS OF A CONTINUOUS MULTISTAGE VERTICAL FLUIDIZED BED SYSTEM
A continuous vertical fluidized-bed dryer operates through a series of downcomers that transfer solids from anupper low-pressure stage to a lower high-pressure one. This work informs on the results testing a system of plasticparticles of 0.009m diameter, 1090 kg/m3 of density, and 0.94 of sphericity...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | México |
| Institución: | Universidad Autónoma Metropolitana |
| Repositorio: | Redalyc-UAM |
| OAI Identifier: | oai:redalyc.org:62060108 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=62060108 |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería bed fluidized downcomer fluidization continuous dryer |
| Sumario: | A continuous vertical fluidized-bed dryer operates through a series of downcomers that transfer solids from anupper low-pressure stage to a lower high-pressure one. This work informs on the results testing a system of plasticparticles of 0.009m diameter, 1090 kg/m3 of density, and 0.94 of sphericity, under a counter-current airflow in twopressure stages. Each stage has 0.25m internal diameter Perspex tube and a height of 0.6m. Perspex tubes having0.032 and 0.057m, internal diameter, fitted with a conic valve at the end of each one were used as downcomers inthe experimental system. By using a 23 experimental factorial design, it was observed that the fact with the highestinfluence on the results was the length of bed/ diameter of bed (L/D). It was also found that the downcomer withthe widest diameter showed the best behavior when operating with an L/D = 0.5 and an L/D =1, and gave a lowerdragging risk as compared to the narrowest diameter. |
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